Petroleum aether,acelic aster,acet and ethanol extract of Melia azedarach with different dose was used for repellency and contact tests against Sitophilus zeamais,and repellent rate and correction mortality were calculated.

• 将苦楝籽的石油醚、乙酸乙酯、丙酮、乙醇4种溶剂的提取物设计成不同剂量,对主要储粮害虫玉米象进行驱避、触杀试验,计算驱避率和校正死亡率。